#app{
    width: 100%;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    background: #000;
    .left{
        display: flex;
        width: 30%;
        height: 30px;
        flex-direction: row;
        justify-content: space-around;
        color: #fff;
        line-height: 30px;
    }
    .right{
        display: flex;
        width: 20%;
        height: 30px;
        flex-direction: row;
        justify-content: space-around;
        color: #fff;
        line-height: 30px;
    }
}